National Route 397 (Japan)

National Route 397
国道397号 (Japanese)
Route information
Length	137.8 km (85.6 mi)
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 396 → National Route 398

National Route 397 is a national highway of Japan connecting Ōfunato, Iwate and Yokote, Akita in Japan, with a total length of 137.8 km (85.62 mi).

The Koyagi Bridge carries Route 397 over the Kitakami River in Mizusawa Ward, Oshu City, Iwate Prefecture. This bridge was built in 1978 but the center span fell in 1994.